κρεῖττον σιωπᾶν ἐστιν ἢ λαλεῖν μάτην → it's better to keep silence than to speak without reason (Menander)
V. περίρρυτος (once: P. Thuc. 4, 64), ἁλίρροθος, ἀμφίκλυστος, ἁλίστονος.
